Stool



FIG. 1 is a front perspective view of a stool showing my new design;

FIG. 2 is a back perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a left side view thereof, the right side view being a mirror image;

FIG. 5 is a top view thereof;

FIG. 6 is a perspective view of a second embodiment showing my new design;

FIG. 7 is a back perspective view thereof;

FIG. 8 is a front view thereof;

FIG. 9 is a left side view thereof, the right side view being a mirror image; and,

FIG. 10 is a top view thereof.

The dashed lines in the drawings are shown for environmental purposes only and form no part of the claimed design. 

The ornamental design for a stool, as shown and described. 